Not necessarily. E.g. the grand duchy of Tuscany consisted of the former duchy of Florence and some smaller fiefs, none of which used to be duchies (that I know of).
right, as i stated in a previous post, it is a collection of various such principalities, not just duchies (but used for simplification). anyways, the concept is identical, and grand/archduchies are basically pseudo-kingdoms, and if they grew any larger (which they necessarily must do to protect the empire, and not putting their own good above it), they would necessarily need to become full kingdoms. pretending they aren't is like living in some fantasy world where only electors can incorporate multiple principalities to become kingdoms.
inb4; it can already be done in one of several ways:
- start as an elector or bohemia (easy button)
- start as austria and make use of RM/PU missions (likewise, scripted)
- pray to RNGesus for elector position (you better have some serious hacking skills)
- pray to RNGesus for elector PU (200+ years here, not a single same dynasty, no chance of PU)
- leave the HRE (contrary to aims)
this simply limits choices to certain states, or RNGesus mechanics... which really aren't the most solid game design. especially since it isn't clear/stated otherwise.
everyone else i've seen post about this uses the 'RNGesus PU an elector' method, which occurs in 1 out of several games maybe... if you're lucky...